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Cone penetration tests in saturated and unsaturated silty tailings
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Russell, A. R., Vo, Thanh Liem, Ayala, J., Wang, Y., Reid, D. and Fourie, A. B. (2022) Cone penetration tests in saturated and unsaturated silty tailings. Geotechnique . doi:10.1680/jgeot.21.00261 ISSN 0016-8505. (In Press)
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WRAP-cone-penetration-tests-saturated-unsaturated-silty-tailings-Vo-2022.pdf - Accepted Version - Requires a PDF viewer. Download (1117Kb) | Preview |
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Official URL: https://doi.org/10.1680/jgeot.21.00261
Abstract
Laboratory-controlled cone penetration test results for two silty tailings in a variety of saturated and unsaturated states, obtained using two calibration chambers, are presented then interpreted using a state parameter-based approach. For each the cone penetration resistances, which increase due to the presence of suction when the tailings are unsaturated, can be normalised using the initial mean effective stress to establish a relationship with the initial state parameter. The relationship is applicable to saturated and unsaturated conditions, as long as the presence of suction hardening as well as the influence of suction on the mean effective stress are accounted for, and as long as the cone penetrations occur under drained conditions. The relationships enable state parameters to be back-calculated from normalised cone penetration resistances. The state parameters enable estimations of the tailings’ peak friction angles for drained loadings as well their propensities to liquefy during undrained loadings. Application is demonstrated using CPT soundings in tailings storages from which the samples were taken, showing how in situ void ratios and state parameters, and future state parameters if the tailings were to become saturated, can be determined. Close agreements with direct measurements of void ratios are shown.
| Item Type: | Journal Article | |||||||||||||||||||||||||||
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| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TH Building construction T Technology > TN Mining engineering. Metallurgy |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | |||||||||||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Tailings (Metallurgy), Tailings dams, Tailings dams -- Design and construction , Settlement of structures , Piling (Civil engineering), Soil penetration test, Penetrometers | |||||||||||||||||||||||||||
| Journal or Publication Title: | Geotechnique | |||||||||||||||||||||||||||
| Publisher: | ICE Publishing | |||||||||||||||||||||||||||
| ISSN: | 0016-8505 | |||||||||||||||||||||||||||
| Official Date: | 14 June 2022 | |||||||||||||||||||||||||||
| Dates: |
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| DOI: | 10.1680/jgeot.21.00261 | |||||||||||||||||||||||||||
| Status: | Peer Reviewed | |||||||||||||||||||||||||||
| Publication Status: | In Press | |||||||||||||||||||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||||||||||||||
| Copyright Holders: | ICE Publishing | |||||||||||||||||||||||||||
| Date of first compliant deposit: | 4 July 2022 | |||||||||||||||||||||||||||
| Date of first compliant Open Access: | 14 June 2023 | |||||||||||||||||||||||||||
| RIOXX Funder/Project Grant: |
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